Complete issue 39:1 as one pdf (5.2mb)  Front cover   c1  Inside front cover   c2  Contents ordered by difficulty   c3  Title page   1  Editorial information   2    TUG Business Institutional members   2    General Delivery From the president 
  Boris Veytsman (orcid)      [Introductory — conferences, funding, accessibility, education]  3  Editorial comments 
  Barbara Beeton      [Introductory — typography and TUGboat news]
    Birthdays: Donald E. Knuth, Gudrun Zapf von Hesse;     Staszek Wawrykiewicz, RIP;     Goodbye Glisterings, hello Duckboat;     A new “dual” typeface: visible and touchable;     40 years ago …;     Hyphens, UK style  4-5  Hyphenation exception log 
  Barbara Beeton      [Reports and notices — update for missed and incorrect U.S. English hyphenations]  5-6  In memoriam: Staszek Wawrykiewicz (1953–2018) 
  Norbert Preining   7  TeX as a path, a talk given at Donald Knuth's 80th birthday celebration symposium 
  Yannis Haralambous      [Intermediate — the impact of TeX: technical, esthetic, and personal]  8-15  TUG is TeX users helping each other 
  Jonathan Fine      [Introductory — brief review of TUG's status and purpose]  16  LaTeX and Jupyter, TikZ and Vega 
  Jonathan Fine      [Introductory — analogy of TeX and HTML publishing languages]  16    Typography Typographers' Inn 
  Peter Flynn      [Intermediate — Fonts and faces and families; XeLaTeX]  17-18  Type designer Nina Stössinger speaks at 3rd Annual Updike Prize event 
  David Walden      [Introductory — report of vibrant presentation on “Looking & Making & Questioning”]  19    LaTeX CTAN quiz 
  Gerd Neugebauer      [Introductory — a tour by url through several notable features of CTAN]  20    Tutorials The DuckBoat—News from TeX.SE: The Morse code of TikZ 
  Carla Maggi      [Intermediate — history of duck mania, extended TikZ example]  21-26    Cartoon Comic: Prefixation 
  John Atkinson   27    Software & Tools From Lua 5.2 to 5.3 
  Hans Hagen      [Advanced — handling complications from new integer representations of numbers]  27-29  TeXing in Emacs 
  Marcin Borkowski      [Intermediate — Emacs basics, built-in features for text, customizations, extensions]  30-36  Tutorial: Using external C libraries with the LuaTeX FFI 
  Henri Menke      [Advanced — step-by-step example linking the GNU Scientific Library (GSL) to LuaTeX, and pgfplots]  37-40  Executing TeX in Lua: Coroutines 
  Hans Hagen      [Advanced — efficiently executing TeX inside Lua loops]  41-43    LaTeX New rules for reporting bugs in the LaTeX core software 
  Frank Mittelbach (orcid), LaTeX Project Team      [Introductory — as maintained by the LaTeX Project: use the latexbug package and github.com/latex3/latex2e]  44-47  LaTeX news, issue 28, April 2018 
  LaTeX Project Team      [Intermediate — A new home for LaTeX2e sources; Bug reports for core LaTeX2e; UTF-8: the new default input encoding; A general rollback concept; Integration of remreset and chngcntr packages; Testing for undefined commands; Changes to packages]  48-50  TeX.StackExchange cherry picking: expl3 
  Enrico Gregorio      [Advanced — extended examples of expl3 programming: lists, strings, macros, graphics]  51-59    Graphics Three-dimensional graphics with TikZ/PSTricks and the help of Geogebra 
  Luciano Battaia      [Intermediate Plus — 3D examples plotted by Geogebra and typeset with TeX]  60-68  ConTeXt nodes: commutative diagrams and related graphics 
  Alan Braslau, Idris Hamid, Hans Hagen      [Intermediate Plus — introduction to and graduated examples of diagrams with MetaPost and ConTeXt]
    article source  69-80    Methods TeX's “additional demerits” parameters 
  Udo Wermuth      [Advanced — analysis of \adjdemerits, \finalhyphendemerits, \doublehyphendemerits]  81-87    Hints & Tricks The treasure chest 
  Karl Berry (orcid)      [Intermediate — new CTAN packages, October 2017–April 2018]  88-89    Abstracts Die TeXnische Komödie 4/2017–1/2018   90  Zpravodaj: Contents of issues 2017/1–4   91    TUG Business TUG financial statements for 2017 
  Karl Berry (orcid)   92    Advertisements TeX consulting and production services   93-94    News & Announcements Production notes 
  Karl Berry (orcid)      [Reports and notices — page numbers as links in TUGboat's complete PDF contents]  94  TUG 2018 announcement   95  Calendar   96